Highway Patrol was a syndicated, fictional police action series produced from 1955 to 1959, concerning the activities of the highway patrol and their leader, Dan Matthews (who held no rank). Although filmed in and around the Los Angeles area, the state setting for the stories was never identified, and city and street names were fictionalized.

Tras escuchar algo impactante sobre su esposa de boca de una desconocida, un hombre de familia termina envuelto en un misterio y la desesperada búsqueda de la verdad.

Inspector Tai On-na (Jessica Hester Hsuan) has always been comfortable in the logistic position of file management. Because of fate, he will work with the Yuanzu-level Tuoqiang senior sister Chan Sam-yuan (Joyce Tang) and the male god of the Flying Tigers team Mung Hon-sam (Moses Chan) to solve the case. (Hui Shiu Hung) arranges to join the unsettled case team, and a group of police officers with their own "characteristics", under the leadership of Hon-sam, pursue unsettled cases that are not of concern to the outside world. Hon-sam was dissatisfied with On-na and fought each other until it was revealed that Anna was afraid of using a gun because of being hijacked, and the two sparked love! On-na meets again with Lau Tat-Wah (Him Law), a tuition student who was destroyed many years ago, but he has joined the underworld... Under the impetus of feelings and guilt, can On-na get back the pistol and re-energize her, and become a new generation of "armed lady cop" ?

Año 1979, Clara Montesinos (Laia Manzanares), miembro de la primera promoción de mujeres policía, llega a una comisaría en la que la irrupción de la heroína condiciona la vida de nuestros protagonistas y de todo el barrio. Allí, la nueva inspectora va a aprender que ser agente es mucho más duro de lo que pensó, y más en ese destino.